HTTP Status 500 - Request processing failed; nested exception is java.lang.NullPointerException

叁歲伎倆 2022-06-05 09:09 135阅读 0赞

HTTP Status 500 - Request processing failed; nested exception is java.lang.NullPointerException  
  
  
type Exception report  
  
  
message Request processing failed; nested exception is java.lang.NullPointerException  
  
  
description The server encountered an internal error that prevented it from fulfilling this request.  
  
  
exception  
  
  
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException  
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:965)  
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)  
javax.servlet.http.HttpServlet.service(HttpServlet.java:620)  
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)  
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)  
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)  
com.auth.filter.AuthorizationFilter.doFilterInternal(AuthorizationFilter.java:77)  
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)  
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343)  
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260)  
com.auth.filter.AuthenticationFilter.doFilterInternal(AuthenticationFilter.java:111)  
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)  
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343)  
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260)  
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)  
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)  
root cause  
  
  
java.lang.NullPointerException  
com.xinghe.base.action.NoticePublic.listNotice(NoticePublic.java:44)  
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)  
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)  
java.lang.reflect.Method.invoke(Unknown Source)  
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)  
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:440)  
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:428)  
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:919)  
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:851)  
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953)  
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)  
javax.servlet.http.HttpServlet.service(HttpServlet.java:620)  
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)  
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)  
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)  
com.auth.filter.AuthorizationFilter.doFilterInternal(AuthorizationFilter.java:77)  
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)  
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343)  
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260)  
com.auth.filter.AuthenticationFilter.doFilterInternal(AuthenticationFilter.java:111)  
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)  
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343)  
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260)  
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)  
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)  
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.54 logs.

Apache Tomcat/7.0.54

NullPointerException，这个错误很明显，就是没有对变量进行Null判断；

错误位置：com.xinghe.base.action.NoticePublic.listNotice(NoticePublic.java:44)

HTTP Status 500 - Request processing failed; nested exception is java.lang.NullPointerException

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